Safety dumping-door for gas-purifiers



Y No. 750,470. PATENTED JAN. 26, 1904. k E. F. LLOYD.

SAFETY DUMPING DOOR FOR GAS PURIPIERS.

APPLICATION FILED JULY 1, 1903 N0 MODEL.

W'JTNESSES. \LQZZUW IJV VENTOR..

UNIT D STATES I Patented January 26, 1904.

PATENT UFFICE.

SAFETY DUlVlPING-DOOR FOR GAS-PURIFIERS.

SPECIFICATION forming part of LettersPatent No. 750,470, dated J anuary 26, 1904.

Application filed July 1, 1903. Serial No. 168,835. (No model.)

To all whom, it may concern:

at Detroit, in the county of Wayne and State of Michigan, have invented certain new and useful Improvements in Safety Dumping-Doors for Gas-Purifiers, &c., of which the following is a specification, reference being had therein to the accompanying drawings.

This invention relates to improvements in dumping-doors for gas-purifiers; and its object is to provide a safety-door to guard against the possibility of the purifier being filled without first closing and securing the door and also to provide the door with means whereby the contents of the purifier maybe held by the operator from falling out, thus permitting him to temporarily open the doorwhen the purifier is full. v

It is also an object of the .invention to so construct the door that the weight of the contents of the purifier will not come directly upon the closure and tend to spring it from its seat, but will be sustained by means held in position by the closure; and a further object is to provide certain other new and useful features, all as hereinafter more fully described, reference being had to the accompanying drawings, in Which- Figure 1 is a transverse vertical section of a device embodying the invention; and Fig. 2, a vertical section of the same at right angles to that of Fig. 1, drawn to a smaller scale and illustrating the manner in which the purifying material is supported Within the purifier. Closures for the discharge-openings in the bottoms of purifier-boxes havebeen constructed with an inner or supporting door to sustain the weight of the material above it and an outer door or closure to seal the opening and prevent the escape of the gas, each door being provided with separate fastening means and both hinged at the same side of the opening; but accidents are liable to occur when such a construction is used, because of the carelessness of the operator in closing the doors, as the inner door may be closed and fastened without closing the outer door and the material put into the purifier and the gas turned onwithout noticing that the outer door is open. The inner door fitting but loosely,

a large quantity of gas consequentlyat once escapes and may envelop and overcome the operators before they are aware of it.

In constructions where no inner door is used the weight of the material restsupon the outer door or closure and has a tendency to spring the door, allowing the gas to escape, and it is also desirable at times for the purpose of removing particles which prevent the outer door from seating perfectly or for other purposes to open the outer door after the purifying materialhas been put in. To provide for these contingencies and to obviate any possibility of mistake on the part of the operators, the construction shown in the accompanying drawings has been devised, in which A represents the bottom of the purifier-box provided with cavoconvex, and its inwardly-projecting rim is faced ofi to engage the seat on the flange A against which it is held by a curved bar C, hinged at one end to ears C on the flange A and to which bar the door is pivotally attached by ears B on the outer side of the door at its axis, and a pivot-pin B which passes through openings in said ears and an opening in the bar. A yoke D is pivoted at one end to an ear D on the side of the flange A opposite the ears C and at its opposite end is formed with a screw-threaded opening to receive the clamping-screw D which is provided with a handwheel D by means of which it may be turned to engage the end of the bar C when the bar is swung up to bring the door B to its seat and the yoke is swung over the end of said bar.

The lower end of the flange A is provided with a recess E to receive the inner supporting-door E, which door is hinged at one side to the ears E on the flange A and diametrically across on the opposite side of the flange are ears F, between which is pivoted one end of a lever F, formed with a shoulder F to engage the door E and hold the same closed and having av curved end F to engage the inner surface of the door B.

When the doors are closed, the lever F is swung upward by the engagement of its curved end with the door B near the side of said door opposite the pivot of said lever and its shoulder F is brought into engagement with the edge of the door E at the side thereof opposite its hinge and holds said door in its closed position. The weight of the purifying material is therefore supported almost entirely by the hinge of the door and the pivot of the lever as the door engages the lever near its pivot, the only pressure on the outer door being that of the end of the lever, which is slight, owing to the length of said lever.

The door E being supported so near the pivot of the lever F, said door will not pass the shoulder F and swing open until the door B has been fully opened, and until door E passes said shoulder it opens but a very short distance, so that but little of the purifying material will escape before that time, and by opening the outer door a short distance, as shown in dotted lines in Fig. 1, the operator may reach in and grasping the lever F and holding it up prevent the escape of any of the material.

Having thus fully described my invention, what I claim is 1. The combination of an outer door hinged at one side of an opening to close the same, an inner door at the inner side of the outer door, hinged at the side of said opening diametrically opposite that at which the outer door is hinged and held closed by the outer door, and means for holding the outer door closed.

2. The combination of an outer door, an inner door located at the inner side of the outer door, means for engaging the inner door, pivoted at one end and operated by the move ment of the outer door for releasing the inner door, and means for holding the outer door closed.

3. The combination of an outer door, an inner door located at the inner side of the outer door, means pivoted at one end adjacent to the edge of the inner door to engage the same and engaging the outer door at its opposite end, whereby the inner door is released when the outer door is fully opened, and means for holding the outer door closed.

4. The combination of an outer door hinged at one side of the discharge-opening, an inner door located within the opening at the inner side of the outer door and hinged at the diametrically opposite side of said opening from that at which the outer door is hinged, and means engaged by the outer door for holding the inner door closed, whereby the inner door is released when the outer door is fully opened.

5. The combination of an outer door, an inner door hinged at one side of the dischargeopening of the purifier, and means pivoted at the opposite side of said opening to hold the door closed and operated by the outer door to release the inner door.

6. The combination of an outer door, an inner door hinged at one side of the dischargeopening of the purifier, and means pivoted at the opposite side of said inner door and held 'in engagement therewith by the outer door, whereby the opening of the outer door releases the inner door.

7 The combination of an outer door, an inner door hinged at one side of the dischargeopening of the purifier, a lever pivoted at the opposite side of the opening and adapted to be engaged by the inner door near its pivot and to engage the outer door at its end to move therewith and release the inner door.

8. The combination witha purifier-box having a discharge-opening, an outer door hinged to the box at one side of said opening, an inner door hinged to the box at the opposite side of'said opening, a lever pivoted to the box diametrically opposite the hinge of the inner door and adapted to be engaged by said door near its pivot and engaging with its free end the side of the outer door farthest from its hinge.

9. The combination with a purifier-box having a discharge-opening, a curved bar pivoted to the box at one side of the opening, an outer door pivoted to said bar, an inner'door hinged to the box at the opposite side of the opening, a bar pivoted at one end to the box diametrically opposite the hinge of the inner door and having a curved end engaging the outer door, and a yoke to engage the end of the curved bar and hold the outer door closed.

10. The combination with a purifier-box having a discharge-opening, a flange on the box around said opening provided with a recess and a seat, an outer door to engage the seat, a curved bar pivoted to the flange at one end and to which the outer door is pivotally attached, a yoke pivoted to the flange and engaging the opposite end of said curved bar, a screw carried by said yoke to engage the bar, an inner door within the recess of the flange and hinged to the flange at one side, a lever pivoted to the flange adjacent to the inner door and at the side thereof opposite the hinge and extending across beneath the door to engage the outer door at its free end, and a shoulder on said lever to engage the inner door.

In testimony whereof I aflix my signature in presence of two witnesses.

ERNEST F. LLOYD.

Witnesses:

THOMAS LONGSTAFF, OTTO F. BARTHEL.

IIO 

